We present three variations of the following new sorting theme: Throughout the sort, the array is maintained in piles of sorted elements. At each step, the piles are split into two parts, so that the elements of the left piles are smaller than (or equal to) the elements of the right piles. Then, the two parts are each sorted, recursively. The theme, then, is a combination of Hoare's Quicksort i...

The lack of long-term performance and durability data of composite piles is an important concern that must be addressed to permit confidence in use of these piles for long-term load-bearing applications. Consequently, a durability study was undertaken to assess the rate degradation of mechanical properties (strength and stiffness) of commercially available glass fiber reinforced polymer (GFRP) ...

In this paper, inelastic pile-soil-structure interaction under static loading is presented by using finite element and boundary element methods. Linear beam column finite elements are used to model the piles and structural elements. Nonlinear soil is modeled by using nonlinear springs along the piles. Modified Özdemir’s nonlinear model is implemented for springs and systems of equations are cou...

We introduce Multi-User Piles Across Space, a technique that allows co-located individuals with PDAs to share and organize information items (e.g., photos, text, sound clips, etc.) by placing these items in shared, imaginary off-screen piles. This technique relies on human capacities to remember spatial layouts, and allows small co-located groups with limited screen real estate to collaborative...

This study investigated the effect of a 30-cm covering of finished compost (FC) on survival of Escherichia coli O157:H7 and Salmonella spp. in active static and windrow composting systems. Feedstocks inoculated with E. coli O157:H7 (7.41 log CFU/g) and Salmonella (6.46 log CFU/g) were placed in biosentry tubes (7.5-cm diameter, 30-cm height) at three locations: (i and ii) two opposing sides at ...

Abstract Concrete structures suffer from cracking that leads to deterioration and shortening of service life. This is very critical for underwater structures, i.e., immersed bridge piles, tunnel or submerged floating tunnels, which are consistently susceptible ingress harmful ions (chloride, sulphate carbonate ions). Autonomous healing concrete cracks can be beneficial assure durability perform...

A state of the art presentation on prestressed piling as used throughout the world is discussed in this General Report to the FIP Symposium on Mass-Produced Prestressed Precast Elements in Madrid, Spain, May 1968. Historical information, design data and notes along with manufacturing techniques, installation practices, discussion of problems and failures and a complete bibliography are all cove...

When depth of flow past a river bridge exceeds opening under the bridge, the flow under the bridge becomes pressurized. The water is directed downward and under the bridge deck, causing increase in velocity and shear stress on the bed thereby increasing bed scour. This is termed as Pressure Flow Scour. The present study investigates the phenomenon of pressure flow scour resulting from a submerg...